Both are just recons, they happen in the world of superhero and any long standing comic that requires a certain status quo.
Oh look Captain America is dead!
Put in a replacement for a 6 - 12 month run.
Retcon, Captain America never died and we are given a retcon as to why he didn't die.
Many things are retconned when translating between mediums.
I've read some Archie and did not interpret Jughead as asexual, just that he preferred eating and being Archie's pal rather than being asexual.
I honestly wasn't even aware that Wonder Woman was bisexual. Basically DC trying to grab at something to make Wonder Woman books to sell. Regardless of how good an artist or writer they put on that title or how good the stories they put out, they never sell anywhere near Batman or Superman.
It seems DC got the headlines for the a month or so, sales spike for that issue and the halo issues around it then died down to what they usually are.
DC constantly strives to retain the status quo for their major 3 characters (Superman, Batman and Wonder Woman). No retcon sticks, the readers know this and any changes which don't really affect how stories are told results in no change in sales except for a hype spike.
I assume there was a similar decision for the Jughead asexuality, which had no affect to the character.
In contrast an example of a retcon that worked out well - Marvel made Ms. Marvel a Muslim teenager. Once again they got media coverage but the character change and the well thought out plot and integration of the character allowed for an exploration of anti-Muslim sentiment as perceived by a Muslim millennial. Sales of the book and character presence from virtually non existent to forefront.
TLDR, Jughead being explicitly asexual / not asexual has no affect on either medium unless a major plot or story point is based upon it with ramifications that change how the story is being delivered.